Next To Cellulosic Patents (Class 428/464)
  • Patent number: 4781978
    Abstract: Article comprising a substrate bearing an optically clear, non-crosslinked coating formed from a blend comprising at least one polymer containing carbonylamido functional groups and at least one hydrophobic polymer substantially free of acidic functional groups.The coating is useful for promoting adhesion, increasing the hydrophilicity of the surface of the article, and increasing receptivity of the substrate for aqueous based inks.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: November 1, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Daniel C. Duan
  • Patent number: 4777081
    Abstract: A biaxially oriented transfer metallizing film based on polypropylene, and process therefor. The film is a three-layer film produced by coextrusion and having a base layer of a propylene homopolymer and top layers applied to the two surfaces thereof. The base layer contains an additive depot of migrating monomers in an amount of 0.01 to 2.0 percent by weight, relative to the weight of the polymer constituting the base layer. The top layers are polypropylene that has a lower viscosity than the polypropylene of the base layer.
    Type: Grant
    Filed: September 12, 1985
    Date of Patent: October 11, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Guenther Crass, Klaus Paschke, Lothar Bothe
  • Patent number: 4752526
    Abstract: A metal-polypropylene laminate composite comprising a polypropylene sheet made of a blend of a modified polypropylene prepared by modifying a crystalline polypropylene with an unsaturated carboxylic acid or its derivatives or a crystalline polypropylene containing such a modified polypropylene, with 15 to 50 wt. % of waste paper, organic fibers or wood pulp and metal plates superposed on and bonded by hot forming to both the surfaces of said polypropylene sheet is provided.It is of light weight and useful in acoustically sound absorption, vibration damping and heat insulation purpose.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: June 21, 1988
    Assignee: Chisso Corporation
    Inventors: Takashi Daimon, Hideshi Sakamoto, Tatsuya Adachi
  • Patent number: 4749625
    Abstract: An amorphous metal laminate sheet having an excellent electromagnetic wave-shielding effect including a core layer containing at least one amorphous metal sheet layer which may be plated with an electroconductive metal, at least one flexible polymeric coating layer laminated on at least one surface of the amorphous metal-coating core layer, and optionally, at least one reinforcing fibrous fabric layer.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: June 7, 1988
    Assignee: Hiraoka & Co., Ltd.
    Inventors: Tsutomu Obayashi, Saburo Baba, Manabu Imoto, Shinobu Watanabe
  • Patent number: 4740402
    Abstract: A sealed container material having a deoxidation function comprises a metallic base material reactive with oxygen and a hydrophilic coating layer of water-soluble polymer such as hydroxyethyl cellulose formed on the surface of the metallic base material. An oxygen- and moisture-permeable coating layer composed of a silicone resin or an olefin resin may further be provided on the hydrophilic coating layer. The material exhibits an excellent oxygen absorbing ability and is thus suited as a material for sealed containers, such as cans, bottles, capsules, etc., for encasing food, drink, chemicals, and medical drugs and storing them over a long period of time without denaturation or deterioration.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: April 26, 1988
    Assignees: Nippon Steel Corporation, Suntory Limited, Kansai Paint Co., Ltd.
    Inventors: Shigeyoshi Maeda, Tsunetoshi Asai, Hidejiro Asano, Haruyoshi Taguchi
  • Patent number: 4693396
    Abstract: There is disclosed a substrate of layers of materials comprising fluorinated polyethylene layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: September 15, 1987
    Assignee: Colgate-Palmolive Company
    Inventors: Edward A. Tavss, Samuel Temin, John Santalucia, Davis L. Carroll
  • Patent number: 4693395
    Abstract: There is disclosed a substrate of layers of materials comprising ethylene propylene copolymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: September 15, 1987
    Assignee: Colgate-Palmolive Company
    Inventors: Edward A. Tavss, John Santalucia, David L. Carroll
  • Patent number: 4687698
    Abstract: An improved makeready packing for preventing corrosion of cylinders of offset or lithographic printing presses which comprises providing a cylinder surface contacting packing element having a corrosion inhibitor applied thereto in such a manner that the inhibitor will effectively protect the entire surface of the cylinder.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: August 18, 1987
    Assignee: The Cromwell Paper Company
    Inventors: David M. Weil, Burton E. Lieberman, Ronald F. Adams
  • Patent number: 4684429
    Abstract: A method is disclosed for producing a photoengravable, laminated printing plate including the steps of applying a homogeneous adhesive free of noncompressible materials between mating sheets of magnesium and steel and then placing the mated sheets into a press to compress the mated sheets until the adhesive is uniformly dispersed therebetween.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: August 4, 1987
    Inventor: Edward L. Dalton, Jr.
  • Patent number: 4675235
    Abstract: Laminated synthetic mica articles are disclosed that have particular applicability as substrates in electronic components. The articles comprise a core of stacked and consolidated, synthetic mica sheets that are impregnated with resin, and a copper foil sealed to a face on the article. Adherence of the copper foil is enhanced by use of a micaceous facing layer and bonding sheet, both being resin-impregnated and the resin cure being advanced beyond the normal B-stage level before assembly. Insulation resistance is enhanced by providing an advanced resin coating on the copper foil before assembly. Use of a bismaleimide triazine and epoxy mixed resin is also disclosed whereby a transformation temperature (Tg) of about 200.degree. C. is obtained.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: June 23, 1987
    Assignee: Corning Glass Works
    Inventor: Shy-Hsien Wu
  • Patent number: 4651756
    Abstract: A method of applying metal foil embellishment to cigarette paper or tipping paper comprises pressing foil against tipping using a heated former of a configuration corresponding to that of the desired embellishment. The method, which is preferably carried out on a filter tip assembly machine, may result in a depression in the tipping, in which case it is advantageous for the tipping to comprise a thermoplastic material.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: March 24, 1987
    Assignee: British-American Tobacco Company Limited
    Inventors: John A. Luke, John F. McCreadie
  • Patent number: 4643936
    Abstract: A backup material for small bore drilling in hard crystalline materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.
    Type: Grant
    Filed: February 14, 1986
    Date of Patent: February 17, 1987
    Assignee: Control Data Corporation
    Inventor: Russell C. Eidal
  • Patent number: 4626459
    Abstract: A mounting structure for a flat, narrow, metallic strip for mounting the strip on a sheet of paper which includes a piece of paper to which the metallic strip is adhered by an adhesive carried on one surface of the adhesive. The piece of paper is dimensioned to provide a border with adhesive that extends about the periphery of the metallic strip. The structure can be stored on Kraft paper to which adhesive does not permanently adhere.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: December 2, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Nicholas Warhol
  • Patent number: 4610906
    Abstract: A carpet joining tape comprises two strips of metal foil (13, 16) which overlie each other and are separated by an electrically insulating material (14), such as a paper strip. The superimposed metal foil strips (13, 16) and interposed electrical insulating material (14) are secured together so that an electric current can be passed through both strips (13, 16) in series to resistively heat the strips (13, 16) so as to melt a heat softenable, carpet bonding adhesive (19). The metal foil strips (13, 16) and electrical insulating material (14) may be secured together and to a base insulating strip (11) beneath the lower foil strip (13) and to reinforcing material (18) on the upper metal foil strip (16) by lines of stitching (21), and a layer of carpet bonding, heat softenable adhesive material (19) is disposed on the upper surface of the upper metal foil strip (16) and reinforcing material (18).
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: September 9, 1986
    Assignee: Brooks Electrofoil Seaming Systems Pty. Ltd.
    Inventor: Ronald H. Brooks
  • Patent number: 4608285
    Abstract: There is disclosed a substrate of layers of materials comprising acetal polymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.
    Type: Grant
    Filed: December 29, 1983
    Date of Patent: August 26, 1986
    Assignee: Colgate-Palmolive Company
    Inventors: Edward A. Tavss, David L. Carroll
  • Patent number: 4595613
    Abstract: There is disclosed a substrate of layers of materials comprising fluoropolymer layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: June 17, 1986
    Assignee: Colgate-Palmolive Company
    Inventors: Edward A. Tavss, Samuel C. Temin
  • Patent number: 4595612
    Abstract: There is disclosed a substrate of layers of materials comprising polyester layers having sandwiched therein between a metal foil layer and a paper layer all suitably adhered to one another. It is also contemplated that the substrate be employed in fabricating a dentifrice tube.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: June 17, 1986
    Assignee: Colgate-Palmolive Company
    Inventors: Edward A. Tavss, Samuel C. Temin
  • Patent number: 4590265
    Abstract: The present invention provides a novel cellulosic material and a process for preparing the same. The cellulosic material is a carboxylated cellulose ester material having an acid number of at least about 5, an inherent viscosity of from about 0.01 to about 1.00 and wherein the anhydroglucose units thereof have ring substituents comprising by weight based on total polymer weight, of from about 0.05 to about 20% hydroxyl groups, from about 0.5 to about 44% acetyl groups, from 0 to about 54% butyryl groups, from 0 to about 47% propionyl groups, from about 0.4 to about 4.0% total carboxyl groups wherein from about 20% to about 100% of these carboxyl groups are non-saponifiable backbone, and wherein the material has a lactone level of from about 4.52.times.10.sup.-5 to about 6.13.times.10.sup.-4. The carboxylated cellulose esters of the present invention are prepared by reacting a cellulose ester with ozone at a temperature of about 25.degree. to 80.degree. C.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: May 20, 1986
    Assignee: Eastman Kodak Company
    Inventors: Richard T. Bogan, Chung-Ming Kuo
  • Patent number: 4585691
    Abstract: A friction material obtained by flame spraying a metal which can be a sacrificial anode for iron on the surface of a friction material substrate in an amount of 0.5 to 8.0 mg/cm.sup.2 shows excellent resistance to judder and excellent rust prevention.
    Type: Grant
    Filed: November 4, 1982
    Date of Patent: April 29, 1986
    Assignees: Hitachi Chemical Co., Ltd., Nissan Motor Co., Ltd., Atusgi Motor Parts Co., Ltd.
    Inventors: Akira Nishimura, Kazuaki Kawasaki, Yasuo Nakano, Hiromichi Horie, Hiroshi Ushiyama, Mikio Manabe, Hikaru Maeyama, Saburo Abe, Masakazu Tambara, Yuji Takahashi, Yasuo Katagiri
  • Patent number: 4584223
    Abstract: The panel has a light, generally rigid cardboard or foamed cork core to opposite sides of which are laminated two, thin sheets of steel foil ranging from 2 to 5 mils in thickness. Paper sheets are secured to and cover the outer surfaces of the steel foil; and these sheets have transparent plastic covers secured thereover. The panel has an overall thickness of less than 0.1" and weighs less than one pound per square foot--e.g. approximately 7 oz./sq. ft. The edges of the panel are covered by strips of molding to prevent injury from the sharp edges of the steel foil and to prevent damage to the panel. Magnetically-backed symbols are releasably attachable to the plastic cover layers, which also are adapted to have erasable graphics marked thereon by liquid crayon or the like.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: April 22, 1986
    Inventor: Wallace A. Krapf
  • Patent number: 4578308
    Abstract: A laminated board lined with thermally and electrically conductive material, which comprises:(a) a prepreg sheet formed of an alumina paper made from a mixture of alumina fibril, as the principal component, having a fiber diameter of 100 microns or smaller and a fiber length which is ten times or more as long as the fiber diameter, and microfibrillar organic fiber as a binding agent, and a thermosetting resin; and(b) an electrically conductive material in foil such as copper or aluminum bonded to said prepreg sheet.
    Type: Grant
    Filed: September 6, 1984
    Date of Patent: March 25, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kiyoshi Hani, Takako Takei, Minekazu Kodama, Toshiyuki Sugano
  • Patent number: 4567100
    Abstract: A laminar system for constructing doors and window shutters, to harden the nside of walls and to greatly increase the penetration resistance of structures. The sketch illustrates the material system and gives representative material thicknesses. The laminar system comprises an outer steel sheet, hardwood, polycarbonate plastic, a ballistic resistant (hardened steel) sheet, and an inner sheet of steel; the materials are laminated in the order given from the outside (attack side) to the inside. This laminar materials systems (used as a 3 foot wide by 7 foot high door, for example) provides greater penetration and ballistic resistance with lighter weight than prior systems.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: January 28, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Teddy L. Pickett, Gary R. Cook
  • Patent number: 4567098
    Abstract: Metallized paper whose metal layer has been deposited by evaporation in vacuo onto a cast-coated paper. The cast coating contains mineral pigments, latex binders and conventional additives, and at least 5 parts by weight of the pigment are a synthetic polymer pigment. The coating material has a pH value >7 and during the process of fabricating the metallized paper it is deposited in such an amount that, after the drying, 10-30 g/m.sup.2 of cast coating are present. The coating material deposited onto a paper web is dried until its moisture content is 5-15% and the web is then pressed with the coated paper surface against a drum with a highly polished surface at a temperature of 100.degree.-160.degree. C. by means of a roll with a nip >1000 N/cm.
    Type: Grant
    Filed: July 6, 1983
    Date of Patent: January 28, 1986
    Assignee: Zanders Feinpaiere AG
    Inventors: Franz-Josef Becker, Erich Hubner, Walter Lammerich
  • Patent number: 4540628
    Abstract: A composite sheet susceptible to having a water base ink applied by an ink jet printing system is provided. The sheet includes a non-absorbent substrate, such as aluminum on to which is applied a coating of hydroxypropyl cellulose dissolved in an organic solvent and containing a suitable flatting agent such as finely divided amorphous silica. The coating is applied in a thickness in the range of 3 to 25 microns. The method of preparing the composite sheet is also disclosed.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: September 10, 1985
    Assignee: John R. Koza
    Inventors: Martin K. Oberdeck, John R. Koza
  • Patent number: 4529663
    Abstract: Non-asbestos flexible sheet material suitable for use in gaskets for the cylinder head of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:______________________________________ ball clay 25-44% calcium silicate of high specific 15-40% surface area cellulose fibres 3-15% organic polymer binder 5-15% fibrillated poly (aromatic amide) 1-15% fibres ______________________________________
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: July 16, 1985
    Assignee: T&N Materials Research Limited
    Inventors: Robert A. Lancaster, Noel C. McKenzie, Brian Hargreaves
  • Patent number: 4529653
    Abstract: Non-asbestos flexible sheet material suitable for use in gaskets for the exhaust manifold of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:ball clay: 25-44%non-fibrous layer silicate: 25-40%graphite: 10-30%cellulose fibres: 3-15%synthetic rubber: 1-10%starch: 1-5%.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: July 16, 1985
    Assignee: T&N Materials Research Limited
    Inventors: Brian Hargreaves, Robert A. Lancaster, Noel C. McKenzie, John D. Crabtree
  • Patent number: 4529662
    Abstract: Non-asbestos flexible sheet material suitable for use in the manufacture of spiral wound gaskets is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed being one that contains the following ingredients in the following proportions by dry weight:china clay 20-50%mica or chlorite 20-50%graphite 10-40%cellulose fibres 2-10%vitreous fibre in wool form 2-10%synthetic organic polymer binder 2-10%.
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: July 16, 1985
    Assignee: T&N Materials Research Limited
    Inventors: Robert A. Lancaster, Noel C. McKenzie, Brian Hargreaves
  • Patent number: 4528234
    Abstract: A transparent laminate is disclosed, which laminate comprises a transparent plastic resin film or sheet substrate (A), a thin layer (B) of at least one metal such as aluminium, tin, iron, zinc, or magnesium formed on the film or sheet substrate (A) by vacuum deposition or sputtering, and a carboxyl group-containing polyolefin layer (C) formed on the metal layer (B) by lamination. In one embodiment, the film or sheet substrate may have a silicon oxide or titanium oxide layer (D) formed thereon by vacuum deposition or sputtering of the oxide.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: July 9, 1985
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Keisuke Kaiho, Hidetoshi Nagata
  • Patent number: 4522887
    Abstract: This invention provides a laminated film prepared by laminating at least one surface of a biaxially oriented polypropylene film (A) with an olefin polymer film (B) containing from 10 to 50% by weight of an ethylene component and the balance mainly comprising a propylene component, said olefin polymer film (B) having at least three peaks in the melting curve within the range of from 120.degree. to 165.degree. C. and a surface roughness Ra of from 0.2 to 1.5.mu., said laminated film being excellent in delustering quality, light transmittance, retention of delustering quality under heat and pressure, adhesion to metallized layers and to paper.This invention further provides a laminated film prepared by laminating a polymer film (C) containing from 1 to 40% by weight of an ethylene component and the balance mainly comprising a propylene component and having one or two melting peaks within the range of from 100.degree. to 165.degree. C. and a surface roughness Ra of below 0.15.mu.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: June 11, 1985
    Assignee: Toray Industries, Inc.
    Inventors: Mamoru Koebisu, Masayuki Shinzawa, Masatsugi Murakami
  • Patent number: 4521492
    Abstract: A light refractive coated paperboard is provided comprising a normally oil and grease permeable substrate, a non-leafing silver-colored ink layer applied to one surface of said substrate and a highly pigmented (titanium dioxide) ink layer superimposed on said non-leafing silver colored ink layer and possibly a clear lacquer or varnish layer superimposed on the TiO.sub.2 containing ink layer. The above order of coating layers produces a somewhat flat appearance; for producing a more metallic look the order of the silver-colored ink layer and of the highly pigmented (TiO.sub.2) layer are reversed. The light refractive coated paperboard conceals, from the outer surface of a package made therefrom, oil and grease stains which have penetrated the inner surface of the package. A method of making such light refractive coated paperboard is also disclosed.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: June 4, 1985
    Assignee: Champion International Corporation
    Inventor: Robert L. Allen
  • Patent number: 4520057
    Abstract: A composite plate including a core plate, and top surface and bottom surface metallic plates which are folded to enclose the core plate to provide an airtight seal to the core plate. The composite plate has particular utility for use as a structural plate, such as floor plate, ceiling plate, etc.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: May 28, 1985
    Assignees: Kawasaki Jukogyo Kabushiki Kaisha, Koshii & Co., Ltd.
    Inventors: Hideichi Fujii, Chiyoki Yamane, Fumio Kawai
  • Patent number: 4511611
    Abstract: The present invention relates to improved liner constructions, and accordingly provides a cable sleeve liner capable in use of being wrapped around a cable splice and preferably having sufficient rigidity to provide an inner support for a heat-recoverable sleeve to be shrunk thereover, the liner comprising a laminate having at least one layer of fibrous sheet material and a metal layer which is substantially impermeable to moisture vapor and has one of its major surfaces facing away from all fibrous sheet layers which may be present. Preferably the fibrous layer(s) is or are arranged between the metal layer and a microperforated first layer of flexible polymeric film material which is permeable to gases or vapors generated within the laminate during recovery of the sleeve.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: April 16, 1985
    Assignee: N.V. Raychem S.A.
    Inventor: Marc F. L. Moisson
  • Patent number: 4507339
    Abstract: A metal container comprising a seamless body and an end wall integral therewith and having on at least its interior surface a protective coating which is the reaction product of a citric acid ester utilized as a lubricant in forming the container and an after-applied synthetic resin.
    Type: Grant
    Filed: November 14, 1983
    Date of Patent: March 26, 1985
    Assignee: American Can Company
    Inventors: Adelaida L. Carbo, Raymond H. Good, Richard J. Karas
  • Patent number: 4504550
    Abstract: A combination of two mutually-adherent laminae is applied to the removable fixing of display or decorative material. A first lamina of PVC is a component of a tri-laminate, including an aluminum foil intermediate layer and a paper backing layer. The backing layer allows the tri-laminate to be secured to a display board or wall, for example using a wallpaper type paste. The display or decorative material is in the form of a sheet, which is laminated using an adhesive to the front surface of a second lamina of polyester terephthalate. When said bi-laminate is pressed into intimate surface contact with the exposed front surface of the lamina it adheres strongly thereto, but can readily be peeled off and replaced when this is required.
    Type: Grant
    Filed: July 8, 1983
    Date of Patent: March 12, 1985
    Assignee: James Frederick John Johnson
    Inventor: Harold W. M. Pook
  • Patent number: 4501787
    Abstract: A prepreg useful in flame resistant copper clad printed circuit boards is made by impregnating a porous substrate with an impregnant containing: either a prebrominated epoxy resin or a mixture of a non-halogenated epoxy resin and flame retarding additive containing bromine, and phenolic hydroxyl groups. A phenolic novolac oligomer having an average of over 2.5 phenolic hydroxyl groups per oligomeric unit is used as curing agent. Optionally, a suitable catalyst may be included. The impregnated substrate is heated to cure or advance the resin to the "B"-stage.
    Type: Grant
    Filed: April 29, 1983
    Date of Patent: February 26, 1985
    Assignee: Westinghouse Electric Corp.
    Inventors: Joseph R. Marchetti, Wilbur R. Thomas
  • Patent number: 4499145
    Abstract: A metal-clad laminate comprising a base plate composed of a plurality of electrically insulating material layers and a metal foil or foils laminated on one side or both sides of the base plate, characterized in that to at least the metal foil or foils is laminated an electrically insulating material layer composed of a silane-modified polyethylene resin sheet, that to the silane-modified polyethylene resin is laminated an electrically insulating material layer made of a paper or cloth containing an epoxy resin and/or a silanol condensation catalyst, and that the layer made of a paper or cloth contains 5 to 35% by weight of an epoxy resin and/or that to the layer made of a paper or cloth is laminated an electrically insulating material layer other than the above-mentioned two layers. Said metal-clad laminate has excellent characteristics such as low, .epsilon., low tan .delta. and excellent moisture-resistant insulating property.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: February 12, 1985
    Assignee: Sumitomo Bakelite Company Limited
    Inventors: Tomomi Yanagida, Mitunori Ajiki, Shigeru Suzuki
  • Patent number: 4486505
    Abstract: A flame retarded copper clad laminate is provided comprising a plurality of paper substrate layers each impregnated with a halogen-containing unsaturated polyester resin containing about 1% to about 30% by weight of a basic filler, and a copper cladding adhesively bonded onto at least one side of the laminate.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: December 4, 1984
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuo Fushiki, Masayuki Oizumi, Masaharu Abe, Makoto Watanabe
  • Patent number: 4486486
    Abstract: A radiographic image conversion screen comprising a support, a first fluorescent layer formed on the support and consisting essentially of a blue emitting phosphor and a second fluorescent layer formed on the first fluorescent layer and consisting essentially of a green emitting rare earth oxysulfide phosphor. The green emitting rare earth oxysulfide phosphor is represented by the formula: (Ln.sub.1-i, Y.sub.i, Tb.sub.a, R.sub.b).sub.2 O.sub.2 S where Ln is at least one element selected from the group consisting of La, Gd and Lu, R is at least one element selected from the group consisting of Dy, Pr, Yb and Nd, and i, a and b are numbers within the ranges of 0.ltoreq.i.ltoreq.0.35, 0.0005.ltoreq.a.ltoreq.0.09 and 0.0002.ltoreq.b.ltoreq.0.01, respectively.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 4, 1984
    Assignee: Kasei Optonix, Ltd.
    Inventors: Hidehiko Maeoka, Etsuo Shimizu, Yujiro Suzuki, Keiji Shimiya, Norio Miura
  • Patent number: 4483902
    Abstract: A record carrier is formed with a substrate, a lacquer layer, and a metallic layer, with the lacquer layer containing from 0.5 to 5 percent by weight of fine particles of calcium carbonate.
    Type: Grant
    Filed: October 31, 1980
    Date of Patent: November 20, 1984
    Assignee: International Business Machines Corporation
    Inventors: Dietrich J. Bahr, Marian Briska
  • Patent number: 4482596
    Abstract: A structure having a catalytic surface plated with an autocatalytic electroless alloy of copper, a metal selected from nickel, cobalt, mixtures thereof and phosphorous.
    Type: Grant
    Filed: August 25, 1982
    Date of Patent: November 13, 1984
    Assignee: Shipley Company Inc.
    Inventors: Michael Gulla, Oleh B. Dutkewych
  • Patent number: 4463055
    Abstract: A reflective film suitable for reflecting light and radio frequency energy includes a thin annealed metal foil affixed to a polymeric carrier layer or substrate wherein the polymeric carrier is thicker than the metal foil so that the foil tends to assume the physical properties, and particularly the elongation of the carrier without rupture or surface cracking of the foil upon stretching. In this manner, the polymer-metal foil laminate can be substantially deformed and stretched to fit complex shapes while maintaining a continuous, 100% reflective foil layer. The elasticity and yield strength of the substrate are selected to permit the combined foil and substrate to be stretched to fit complex shapes.
    Type: Grant
    Filed: April 27, 1983
    Date of Patent: July 31, 1984
    Inventor: Marvin P. Hodges
  • Patent number: 4452945
    Abstract: Coating compositions capable of curing at or near to room temperature comprise 90-50% by weight of a specified hydroxyl group-containing addition polymer, 10-50% by weight of an alkylated melamine-formaldehyde crosslinking agent and an acid catalyst consisting of a blend of a C.sub.1-4 alkylated arylsulphonic acid and a C.sub.8-14 alkylated arylsulphonic acid in amounts such that the --SO.sub.3 H group content is 0.70-2.1% of the total weight of the addition polymer and the crosslinking agent. The compositions are particularly suitable for the refinishing of automobile bodies.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: June 5, 1984
    Assignee: Imperial Chemical Industries PLC
    Inventors: Thomas N. E. Bowen, Peter Butler, Auguste L. L. Palluel
  • Patent number: 4452843
    Abstract: Security papers with luminescing authenticity characteristics built in or printed thereon which absorb in the visible region of the optical spectrum but in the infrared have a transparent region in which the luminophore also emits. By the absorption in the visible undesired parasitic emissions are suppressed which would make the luminophore visually evident on corresponding excitation. For testing the authenticity of the document the emission is investigated in the infrared. Suitable luminophores are rare earth metal luminophores in suitable host lattices, particularly in ferrite lattices or garnet lattices, which contain transition metal ions as absorbing elements.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: June 5, 1984
    Assignee: GAO Gesellschaft fur Automation und Organisation mbH.
    Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
  • Patent number: 4451521
    Abstract: Security paper with luminescing authenticity characteristics which after excitation with invisible light emit exclusively invisible light of different wavelengths as authenticity signal. The luminophores can be included in the printing ink used or they can be added to the paper material in the manufacture of the paper material. A corresponding test apparatus makes it possible to check the authenticity of the security paper in the presence of customers but unnoticed by them; thereby the invisibility of the test signal and the authenticity signal are taken advantage of and the test device is hidden behind a plate non-transmissive for visible light which however is transmissive for the test signal and for the authenticity signal.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: May 29, 1984
    Assignee: Gao Gesellschaft fur Automation und Organisation mbH
    Inventors: Wittich Kaule, Gerhard Stenzel
  • Patent number: 4451530
    Abstract: Security papers with luminescing authenticity features worked into them or printed on them. The authenticity features used consist of a luminophore and one or more absorbing materials by which the emission and/or the excitation spectrum of the luminophore is changed in detectable fashion. The dyestuff can be present as an admixture to the luminophore, as a coating of a luminophore layer or as a coating on luminophore powder grains. For checking the authenticity of documents the emission spectrum of the luminophore is not used but the change generated by the technology used in the emission or excitation spectra.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: May 29, 1984
    Assignee: GAO Gesellschaft fur Automation und Organisation mbH.
    Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
  • Patent number: 4448843
    Abstract: A magnetic recording medium is described wherein a layer comprising mainly a polyurethane resin, vinylidene chloride copolymer, or a cellulose derivative is formed on the surface of a vapor-deposited ferromagnetic metal layer on a substrate.
    Type: Grant
    Filed: April 10, 1981
    Date of Patent: May 15, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasuyuki Yamada, Ryuji Shirahata, Akio Yanai, Tatsuji Kitamoto
  • Patent number: 4447492
    Abstract: Electrically conductive articles which comprise a non-conductive substrate having thereon a substantially uniform, electrically conductive dispersion of finely divided particles of ferroalloys, silicon alloys, or mixtures thereof, are described. The articles are useful as components of electrical switches, contacts, connectors, circuit boards or electromagnetic interference shields. The conductive portion of the article may be subsequently electroplated or electrostatically painted.
    Type: Grant
    Filed: August 7, 1981
    Date of Patent: May 8, 1984
    Assignee: Occidental Chemical Corporation
    Inventor: James P. McKaveney
  • Patent number: 4446188
    Abstract: A layered clad laminate with universal center plane adapted for the manufacture of printed wiring board comprising an electrically conductive self-sustaining, integral metal center sheet having, in repetitive fashion, a series of predetermined patterns of punched or photochemically developed openings therein, said sheet being pressed between electrical insulating layers of resin impregnated reinforcing material, said layers being adhered to said sheet and to each other through said openings, and on each of the outer surfaces of said laminate and adhered thereto a layer of electrically conductive metal foil which is essentially uniform and imperforate.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: May 1, 1984
    Assignee: The Mica Corporation
    Inventors: Harshad K. Patel, Andjelko Illick
  • Patent number: 4446204
    Abstract: Security paper with authenticity characteristics embodied therein or printed thereon which are both ferrimagnetic and also only slightly absorbed in the infrared spectral region.The presence of both properties at the same position on the security paper is tested, wherein both tests can preferably be carried out simultaneously. Materials which show this rare combination of properties are some ferrites, ferrimagnetic garnet compounds and the so-called green ferromagnetic compounds.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: May 1, 1984
    Assignee: GAO Gesellschaft fur Automation und Organisation mbH.
    Inventors: Wittich Kaule, Gerhard Schwenk, Gerhard Stenzel
  • Patent number: RE32759
    Abstract: A backup material for small bore drilling in hard .[.crystalline.]. materials, such as multilayer circuit boards containing polyimide/glass, polyimide kevlar or modified epoxy BT/glass, includes at least one layer of hard crystalline material. Standard LCOA material with an additional layer selected from the group comprising polyimides, fluorocarbons and high temperature polycarbonates has proven successful.
    Type: Grant
    Filed: March 4, 1987
    Date of Patent: October 4, 1988
    Assignee: Control Data Corporation
    Inventor: Russell C. Eidal